直接黑 38 (CAS No.1937-37-7)
- 物化性质
- 棕黑色粉末。溶于水呈绿光黑色，85℃时溶解度为40g/L。稍溶于乙醇呈绿光蓝黑色，可溶于溶纤素，不溶于其他有机溶剂。遇浓硫酸呈深红光蓝色，稀释后呈紫酱色至红光黑色沉淀；在浓硫酸中呈黄棕色溶液；在浓盐酸中呈暗红光黑色溶液。染料水溶液加浓盐酸呈紫酱色沉淀，加浓氢氧化钠液生成蓝灰色沉淀。对纤维素纤维染色，染料吸尽性好，80℃时亲和力最大，可拔染。
- 技术参数
- 外观为棕黑色均匀粉末。 水不溶物含量≤8%，不溶于水的杂质含量≤0.8%。
English description（英文原文，共 1894 字符）
Product Name:Direct Black 38
English Name:Direct Black 38
CAS No.:1937-37-7
Aliases:Direct Black BN, Direct Black EX, Direct Black BX, Direct Deep Black EX
Molecular Formula:C34H25N9Na2O7S2
Physical Properties:Brownish-black powder. Soluble in water giving a greenish-black color; solubility 40 g/L at 85°C. Slightly soluble in ethanol giving a greenish-blue-black color; soluble in cellosolve; insoluble in other organic solvents. With concentrated sulfuric acid it gives a deep reddish-blue color, which turns to a purple-brown to reddish-black precipitate upon dilution; a yellowish-brown solution is formed in concentrated sulfuric acid; a dark reddish-black solution is formed in concentrated hydrochloric acid. Adding concentrated hydrochloric acid to the aqueous dye solution produces a purple-brown precipitate; adding concentrated sodium hydroxide solution produces a blue-gray precipitate. It has good exhaustion on cellulose fibers, with maximum affinity at 80°C, and is dischargeable.
Uses:Dyeing cotton or viscose produces a black shade with high jetness and high exhaustion rate. It has poor migration and is sensitive to salt, so slow heating and portionwise salt addition are recommended during dyeing. After dyeing, it can be treated with fixing agent Y or M to improve washing and water-immersion fastness. It is also used for direct printing and ground discharge printing on cotton or viscose, and for dyeing silk, nylon and their blends. Additionally, it is used for coloring leather, biological materials, wood and plastics, and as a raw material for black inks.
Technical Specifications:
Appearance: brownish-black uniform powder.
Water-insoluble content ≤8%, and impurity insoluble in water ≤0.8%.
Fineness: residue on 80-mesh sieve ≤5%.
Strength: 100±3 points; shade close to standard sample.
Dyeing fastness on cotton fabric conforms to the standard sample.
English Name:Direct Black 38
CAS No.:1937-37-7
Aliases:Direct Black BN, Direct Black EX, Direct Black BX, Direct Deep Black EX
Molecular Formula:C34H25N9Na2O7S2
Physical Properties:Brownish-black powder. Soluble in water giving a greenish-black color; solubility 40 g/L at 85°C. Slightly soluble in ethanol giving a greenish-blue-black color; soluble in cellosolve; insoluble in other organic solvents. With concentrated sulfuric acid it gives a deep reddish-blue color, which turns to a purple-brown to reddish-black precipitate upon dilution; a yellowish-brown solution is formed in concentrated sulfuric acid; a dark reddish-black solution is formed in concentrated hydrochloric acid. Adding concentrated hydrochloric acid to the aqueous dye solution produces a purple-brown precipitate; adding concentrated sodium hydroxide solution produces a blue-gray precipitate. It has good exhaustion on cellulose fibers, with maximum affinity at 80°C, and is dischargeable.
Uses:Dyeing cotton or viscose produces a black shade with high jetness and high exhaustion rate. It has poor migration and is sensitive to salt, so slow heating and portionwise salt addition are recommended during dyeing. After dyeing, it can be treated with fixing agent Y or M to improve washing and water-immersion fastness. It is also used for direct printing and ground discharge printing on cotton or viscose, and for dyeing silk, nylon and their blends. Additionally, it is used for coloring leather, biological materials, wood and plastics, and as a raw material for black inks.
Technical Specifications:
Appearance: brownish-black uniform powder.
Water-insoluble content ≤8%, and impurity insoluble in water ≤0.8%.
Fineness: residue on 80-mesh sieve ≤5%.
Strength: 100±3 points; shade close to standard sample.
Dyeing fastness on cotton fabric conforms to the standard sample.
共 1 家生产厂家、批发商，
1 条供应报价
供应报价
常见问题
- 直接黑 38的 CAS 号是多少？
- 直接黑 38的 CAS 号是 1937-37-7。
- 直接黑 38的分子式和分子量是什么？
- 直接黑 38的分子式为 C34H25N9Na2O7S2。
- 直接黑 38的英文名称是什么？
- 直接黑 38的英文名称为 Direct Black 38。
- 直接黑 38还有哪些别名？
- 直接黑 38又称 直接青光元、直接元、直接黑EX、直接黑BX。
- 直接黑 38有哪些供应商和生产厂家？
- 掌上化工当前收录 1 条直接黑 38供应报价，来自 1 家供应商，可按地区、纯度、级别筛选对比。
- 直接黑 38的供应商主要分布在哪些地区？
- 直接黑 38的供应商主要分布在 上海市（1 条） 等地。
- 直接黑 38有哪些级别可选？
- 平台上直接黑 38的供应级别包括 工业级。
- 直接黑 38的报价单位是什么？
- 直接黑 38的报价单位主要有 千克。
- 哪里可以查到直接黑 38的价格？
- 掌上化工直接黑 38产品页汇总了各供应商的最新报价与规格，地址：/chemicals/1937-37-7/。部分供应商价格为电议，可通过页面上的询价功能直接获取。
以上信息由平台根据收录的产品数据自动生成，数据更新时间 。 价格与库存由供应商自行发布，实际交易请以询价结果为准。
没找到合适的供应商？
发布采购需求，让供应商主动联系你。我们会在 1 个工作日内跟进。
发布直接黑 38采购需求
